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Finding the Fourth Proportional to 627,897.60, 866,480.64 and 355,991.04

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Solution

The fourth proportional to 627,897.60, 866,480.64 and 355,991.04 is: 491,257.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,897.60 : 866,480.64 = 355,991.04 : x
  2. Step 2: Convert to fraction form
    627,897.60/866,480.64 = 355,991.04/x
  3. Step 3: Cross multiply
    627,897.60x = 866,480.64 × 355,991.04
  4. Step 4: Simplify right side
    627,897.60x = 308,459,344,173.47
  5. Step 5: Solve for x
    x = 308,459,344,173.47/627,897.60
  6. Step 6: Final answer
    x = 491,257.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.